Color photographic silver halide material

Abstract

A colour photographic material having a support and at least one silver halide emulsion layer containing couplers, which layer contains as couplers a 2-equivalent magenta coupler and both at least one compound of the formula (III) and at least one compound of the formula (IV): ##STR1## in which R 4 to R 9 and n have the meaning stated in the description, is distinguished by reduced pressure sensitivity.

We claim: 
     
       1. A color photographic material which comprises a support and at least one silver halide emulsion layer containing couplers, which layer contains as couplers a 2-equivalent magenta coupler and both at least one compound of the formula (III) and at least one compound of the formula (IV): ##STR52## in which R 4  and R 5  are identical or different and are alkoxy or alkylmercapto, R 6  means H, alkyl, halogen or R 4 ,   R 7  means H, alkyl, halogen, OH or alkoxy,   R 8  means NHCOR 9 ,   R 9  means alkyl or aryl and   n means 0 or 1.   
     
     
       2. The color photographic silver halide material according to claim 1, wherein the compounds of the formulae (III) and (IV) are used in a total quantity of 0.1 to 3.0 g/1000 of AgNO 3  of the emulsion concerned, wherein the weight ratio of formula (III) to formula (IV) is 6:1 to 1:6. 
     
     
       3. The color photographic silver halide material according to claim 1, wherein the silver halide emulsion of at least one silver halide emulsion layer is an AgClBr emulsion containing 80 to 99.9 mol. % of AgCl. 
     
     
       4. The color photographic silver halide material according to claim 3, wherein the AgCl content is above 95 mol. %. 
     
     
       5. The color photographic silver halide material according to claim 1, wherein the silver halide emulsion of at least one silver halide emulsion layer is ripened with gold and sulfur compounds. 
     
     
       6. The color photographic silver halide material according to claim 1, wherein the 2-equivalent magenta coupler is one of the formulae I or II ##STR53## in which R 1 , R 2  and R 3  mutually independently mean hydrogen, alkyl, aralklyl, aryl, aroxy, alkylthio, arylthio, amino, anilino, acylamino, cyano, alkoxycarbonyl, alkylcarbamoyl or alkylsulfamoyl, wherein these residues may be further substituted and wherein at least one of these residues contains a ballast group, Y means a residue, other than hydrogen, which is eliminable on chromogenic coupling (fugitive group).   
     
     
       7. The color photographic silver halide material according to claim 6, wherein R 1  means t.-butyl and Y means Cl. 
     
     
       8. The color photographic silver halide material according to claim 1, wherein n means zero, R 6  and R 7  mean H, R 5  means alkoxy and R 9  means alkyl. 
     
     
       9. The color photographic recording material according to claim 8, wherein the compounds of formulae III and IV are used in a total quantity of 0.03 to 2.0 g/1000 g AgNO 3 . 
     
     
       10. The color photographic silver halide material according to claim 9, wherein the weight ratio of formula III to formula IV is 4:1 to 1:4. 
     
     
       11. The color photographic silver halide material according to claim 10, wherein the AgCl content is above 98 mol %. 
     
     
       12. The color photographic silver halide material according to claim 1, wherein the silver halide emulsion layer is doped with 10 -9  to 10 -4  mol of Rh 3+   per mol of silver halide. 
     
     
       13. The color photographic silver halide material according to claim 1, wherein the silver halide emulsion is doped with 10 -9  to 10 -4  ions of Ir 4+   per mol of silver halide.